Warp stop-motion.



0. w. RICHARDSON.

WARP STOP MOTION.

APPLICATION FILED MAR a. 1917-- 1 268, 1 52., Y Patented June 4, 1918.

OSCAR W. RICHARDSON, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON KNOWLES LOOlVI WORKS, OF WORCESTER, MASSACHUSETTS.

&

WARP STOP-MOTION.

Application filed March 8, 1917.

To all whom it may concern:

Be it known that I, Oscar: W. RICHARD- soN, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented a new and useful WVarp Stop-Motion, of which the following is a specification.

This invention relates to a warp stop motion and particularly to improvements in the connections and devices through which the shipper lever is controlled by the warp detecting mechanism.

While my invention is capable of general application I have herein disclosed it as embodied in a warp stop motion of the type shown and described in the prior patent to Wyman, No. 665,713 issued January 8, 1901.

It is the object of my invention to improve and simplify the construction of the con nections and actuating devices through which the warp detecting mechanism controls the shipper lever.

As herein shown, an important feature of my invention relates to a rocking support for the actuating rod through which the shipper lever is controlled. This support preferably engages the actuating rod at separated points on opposite sides of its pivot, and movement of said support from normal position in either direction will move the actuating rod into position for engagement by a hunter on the lay.

My invention further relates to certain arrangements and combinations of parts hereinafter described and more particularly pointed out in the appended claims.

The preferred form of my invention is shown in the drawings, in which Figure 1 is a side elevation of a portion of a loom with my improved warp stop motion applied thereto, and

Figs. 2 and 3 are detail views showing the rocking support in different positions.

Referring to the drawings, I have indicated certain well-known parts of a loom including the frame 10, the lay 11, the shipper lever 12 and a knock-off lever 13 pivoted to a fixed bracket 141 and engaging the shipper lever. The shipper lever and knockoff lever may be collectively designated as a loomstopping device.

I have also indicated certain parts of a Specification of Letters Patent.

Patented June 1,1918.

Serial No. 153,418.

warp stop motion of the type shown in the patent to Wyman No. 665,713 above referred to. These parts include the vibrator bar 15 angularly movable about its pivot 16, the bell crank 17 connected by a link 18 to actuating mechanism not shown, and the lever 20 pivoted at 21 to the bell crank 17. The lever 20 has a slot and pin connection with the vibrator and is also yieldingly engaged by a block 22 slidably mounted on the bell crank 17 and pressed against the side of the lever 20 by a spring 23, thereby normally retaining the lever yieldingly in the position shown in full lines in Fig. 1. All of the parts thus far described are or may be of the usual construction and form no part of my invention.

All actuating rod 30 is pivotally connected at 31 to the knock-off lever 13 and at its opposite end rests upon a rocking support consisting of a double member 32 rigidly connected to an arm 33 and movable thereby about a fixed pivot 34. The arm 33 is connected by a link 35 to a stud 36 in the upper end of the lever 20 previously described. The double supporting member 32 engages the actuating rod 30 at separated points on each side of its pivot 34, the parts being shown in normal position in Fig. 1. Guides 37 may be provided for holding the rod 30 in correct lateral position on the member 32. The rod 30 carries a 111g or projection 38 adapted for engagement by a hunter 39 on the lay 11 when the rod 30 is raised to operative position.

As long as the vibrator 15 is free to swing, the lever 20 moves with the bell crank 17 about the axis of the stud 36 as a center and the rod 35 therefore receives no movement. If the vibrator 15 is engaged by a fallen drop wire it will be retained in one or the other of the dotted line positions indicated in Fig. 1, and the lever 20 will thereafter swing about its slotted connection with the vibrator, thereby moving the stud 36 to the right or left as also indicated in dotted lines in Fig. 1. Such movement of the stud 36 is transmitted through the rod 35 to the arm 33 and rocks the supporting member 32 about its pivot 34. The member 32 thereupon assumes either the position shown in Fig. 2 or that shown in Fig. 3, in either case raising the rod 30 and bringing the projection 38 into the path of movement of the hunter 39. Such engagement by the hunter causes the knock-off lever 13 to operate to release the shipper lever 12 and stop the loom.

Having thus described my invention it Will appear that I have provided extremely simple and reliable mechanism for operatively connecting the knock-off lever to its actuator. It will also be evident that changes and modifications can be made therein by those skilled in the art Without departing from the spirit and scope of my invention as set forth in the claims, and I do not Wish to be otherwise limited to the details herein disclosed, but what I claim is- 1. A Warp stop motion having, in combination, an actuator, a loom stopping device, an actuating rod connected thereto, a member engaging and supporting said rod, a fixed supporting bearing for said member, and Warp controlled means to move said member in either direction from normal position, said member remaining unmoved and holding said actuating rod in normal inoperative position during the regular operation of the loom and being effective when moved from normal position in either direction by said Warp controlled means on the breaking of a Warp thread to move said actuating rod into position for operative engagement by said actuator.

2. A Warp stop motion having, in combination, a loom-stopping device, an actuating rod connected thereto, a support for 3- said rod, and Warp-controlled means to move said support, said support being mounted on a fixed pivot and engaging said rod on opposite sides of it pivot, whereby move: ment of said support in either direction 4 from normal position will raise said actuating rod to operative position, said support and rod remainingunmoved and inoperative during the regular operation of the loom. 4 3. In a loom, a lay, a hunter on said lay, a loom-stopping device, an actuating rod connected thereto and having a projection thereon forengagement by said hunter, a

rocking support for said rod, a fixed pivot 50 for said support, and Warp-controlled means to rock said support, said support engaging said rod at separated points on opposite sides of its pivot, whereby movement of said support in either direction from normal position Will raise said rod and position said projection in the path of said bunter.

In testimony whereof I have hereunto aflixed my signature.

OSCAR W. RICHARDSON.

Copies of this patent may be obtained for five cents each, by addressing" the Commissioner of Patents, Washington, D. G. 

